Keep sounding

[AC Question]

Since yesterday start sounding every 10 seconds like I have notifications and I didn't have any, drive me crazy, turn off the ringtone but I don't like the fact that is silent, maybe I had a real notification and I don't get it, overnight I shut it off, almost go to Tmobile today to fix it, please can Anybody help me thanks

 

[Tim1954]

Settings... Accessibility... Notifications reminder....